PopWindow Android 7.0 位置显示不准确解决办法

@Override
public void showAsDropDown(View anchorView, int xoff, int yoff) {
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.N) {
int[] a = new int[2];
anchorView.getLocationInWindow(a);
showAtLocation(anchorView, Gravity.NO_GRAVITY, xoff, a[1] + anchorView.getHeight() + yoff);
} else {
super.showAsDropDown(anchorView, xoff, yoff);
}
}

@Override
public void showAsDropDown(View anchorView) {
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.N) {
int[] a = new int[2];
anchorView.getLocationInWindow(a);
showAtLocation(anchorView, Gravity.NO_GRAVITY, 0, a[1] + anchorView.getHeight() + 0);
} else {
super.showAsDropDown(anchorView);
}
}